Playwright Extension Repro

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A minimal reproduction repository designed to demonstrate and test Chrome extension loading within the Playwright MCP server. It evaluates specific configuratio

by hsm207

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About

A minimal reproduction repository designed to demonstrate and test Chrome extension loading within the Playwright MCP server. It evaluates specific configuration settings required for successful extension injection and page modification.

README

Minimal reproduction showing that standard Chrome extension loading in the Playwright MCP server fails without specific configuration settings.

Feature Request: microsoft/playwright#39569

🚀 Quick Start

Install dependencies:
```
npm install
```
Run the matrix test:
```
npm test
```

📊 What this tests

The script repro_matrix.ts compares two configurations:

ADVANCED_CONFIG: Uses the specific settings identified to enable extensions:
- channel: "" (Reverts to bundled Chromium)
- chromiumSandbox: false (Allows unpacked extension mounting)
- allowUnrestrictedFileAccess: true (Disables protocol guard)
PAVEL_SUGGESTION: Uses the simplified configuration suggested in the feature request.

✅ Success Criteria

Background Color: The extension should inject a content script that turns example.com pink (rgb(255, 192, 203)).
Page Title: The extension should change the document title to PINK_EXT_ACTIVE.

from github.com/hsm207/mcp-extension-repro

Installing Playwright Extension Repro

This server has no published package — it is built from source. Open the repository and follow its README.

▸ github.com/hsm207/mcp-extension-repro

FAQ

Is Playwright Extension Repro MCP free?

Yes, Playwright Extension Repro MCP is free — one-click install via Unyly at no cost.

Does Playwright Extension Repro need an API key?

No, Playwright Extension Repro runs without API keys or environment variables.

Is Playwright Extension Repro hosted or self-hosted?

Self-hosted: the server runs locally on your machine via the install command above.

How do I install Playwright Extension Repro in Claude Desktop, Claude Code or Cursor?

Open Playwright Extension Repro on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.

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